63474816 has 64 divisors (see below), whose sum is σ = 172241280. Its totient is φ = 20702208.

The previous prime is 63474811. The next prime is 63474833. The reversal of 63474816 is 61847436.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (63474811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16290 + ... + 19806.

It is an arithmetic number, because the mean of its divisors is an integer number (2691270).

Almost surely, 2^63474816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63474816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86120640).

63474816 is an abundant number, since it is smaller than the sum of its proper divisors (108766464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63474816 is a wasteful number, since it uses less digits than its factorization.

63474816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581 (or 3569 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 63474816 is about 7967.1083838492. The cubic root of 63474816 is about 398.9028601283.

The spelling of 63474816 in words is "sixty-three million, four hundred seventy-four thousand, eight hundred sixteen".